<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div{width: 1400px;height: 1400px; background-color:
             darkorange;background-image: url(./QQ头像.jpg);
             /* background-repeat: repeat-x; 
             background-repeat: repeat-y; */
            background-repeat: no-repeat;
            /* background-position: 100px   200px; */
            background-position: center center;}
            /* 坐标，百分比，单词都可一在用作位置的设置 */
    </style>
</head>
<body>
     <div>

     </div>
</body>
</html>